Shaker conveyer



Oct.' 25, 1938. R. MOORE SHAKER CONVEYER Filed June' 1, 1956 2sheets-sheet 1 Oct. 25, 1938. R. MOORE SHAKER CONVEYER Filed June 1,1956 2 Sheets-Sheet 2 @ge/f Patented Oct. 425, 1.938

`} I UNITEDN sjrATEs PATENT OFFICE rFhis invention relates to conveyers,and more particularly to a reciprocating trough conveyer which includesboth inclined and substantially n horizontal sections, and in which theconveyance clined section was included.

of material upon the inclinedsection is to be up the inclination. l

' Since the conveyance of 'material by the reciprocating trough dependsprimarily upon the frictional engagement of the material with the troughand thisV frictional engagement is obviously effected by variations inthe inclination of the trough, reciprocating conveyers as hithertoconstructed have had distinct limits where an n- Obviously, `if theconveying capacity oi'the horizontal section is any selected quantity,theconveying capacity of the inclined section is a lesser quantity andpilingup of the material will occur at therjunction of the horizontaland inclined sections, withrthe `result that this material Will overflowthe sides of the chute. Furthermore, if the incline of the inclinedsection exceeds a given grade, it is often `necessary to operate theconveyer mechanism with what is known as a hard conveyingmotion, moreparticularly described hereinafter, and

such motion vcauses both a higher consumption I of power and greatershock upon the mechanism.

i An important object of this invention is to so construct a conveyermechanism including both inclined and horizontal sections that theconveying capacity of the Vinclined section will equal or exceed that ofthe horizontal section.

A further object of the invention is` the provision of a constructionsuch that a single operating mechanism will suffice to impart to bothconl veyer sections the desired conveying motions.

A further and more specific object of the invention is the provision ina conveying mechanism including inclined and horizontal trough sectionsof means for imparting to the inclined section a greater longitudinalreciprocation than is imparted to the horizontal section. r

4These and other'ob'jects I attain by the construction shown in theaccompanying drawings wherein, for thepurpose of illustration, I have yReferring now more particularlyto ,the` draw.-

ings'the numerals I0 and I I generally designate horizontal and inclinedconveyer sections, the inclined conveyer section `having an angularlybent nose I2 tting within and slidable upon the vinner surface of thehorizontal section I0. The horizontal section I is mounted upon suitableroller supports I3, while the inclined section is mounted upon rockerarms I4 which are, in turn, carriedby suitable supports. The numeral I5designates the usual shaker conveyer drive or jigger which, as wellknown to those familiar with the art, is a mechanism whereby through asystem of cranks, rocker arms or other equivalent, a conveying motion isimparted to the trough. This motion is diagrammatically illustrated inFi`g.5, the section S of the curve indicating the motion of the troughin one direction, While the section I-I indicates its motion in theopposite direction. It is possible that either of the sections S or H beemployed in conveyance; that is to say, the material may be moved witheither of these graphs representing the movement of the conveyer-in thedirection inwhich the material is moving. It is, however, vastlypreferred that that portion of the curve S be employed in the con-`veying direction, for as noted there are no abruptA velocity changes inthis curve-,and it is, accordingly,v known as a "soft motion enablingthe mechanism to pick up the weight of both the conveyer and theconveyed material ata smoothly accelerated rate, and atthe same timeavoidingV scribed, I am able to utilize the curve S on the conveyingstroke and at the Sametime eliminate the dierence in capacitiesordinarily existing in the horizontal and inclined sections.

In accordance with my invention, the oscillating arms I6 of the drivingengine I5 are connected through pitmans I'I with the horizontal troughsection I0 to reciprocate the same. The

horizontal trough section Illis in turn connected through pitman I8 withone of the sets of rocker arms I4 Supporting the inclined section. Theconnection to these rocker.` arms is made intermediate the lengthsthereof so that the longitudinal motion or stroke 4A imparted to theinclined section Il is greater than the stroke B imparted tothe sectionIII. The material may thus he caused .tomove along the; inclined sectionII at the same, or even at a greater speed than upon the horizontalsection. The conveying action of the inclined section may be furtherincreased by so disposing rocker arms I4 that the motion is entirely atone side of a perpendicular passing through the pivots of the rockerarms and, accordingly, imparting to the trough the Wellknown tossingmotion often utilized in shaker conveyers of this type. It may befurther increased by employing a conveyer trough having a bottom soconstructed as to increase the gripping action between the trough andthe conveyed material, as, for example, an arrangement such. as shown inmy prior Patent No. 1,997,495 which comprises a perforated platedisposed upon the bottom of the conveyer and adapted to receive in theperforations thereof particles' of the con'- veyed material which will,of. course,` have more frictional affinity for the material than thesheet iron or steel ordinarily employed in construction of such troughs.The rocker arms to which pitman I8 is connected are preferably pivotedAupon the base I9 of the conveyer drive engine i5 and so constructed thatthe pitman may be adjustably connected thereto, additional openings forthe pinv of the pitman being indicated at Ida. The motion of theconveyer section H` being similar to that of the section I0, thereis-comparatively little wearing action at the contact points of thesesections, the only friction resulting.- from the extra longitudinalmotion applied tothe inclined section.

Since the construction is obviously capable of considerable modificationwithout departing from the spirit of my invention, I do not wish to beunderstood as limiting myself thereto except as hereinafter claimed.

I claim:

l. A reciprocating trough conveyer comprising relatively movablesubstantially horizontal and upwardly inclined sections, and means, forimparting a reciprocating conveying motion to` said sections causingmovement of material placed thereon toward the upwardly inclinedsection, so constructed and arrangedv that-the motions of the sectionsare simila-r and havesubstantially identical time intervals whiletheinclined section is reciprocated through a greater longitudinal strokethan the horizontal section whereby to cause material moving thereoverto'- travelat substantially the same speedf as that upon the horizontal.section;

2. A reciprocating trough conveyer comprising relatively movablesubstantially horizontal and upwardly inclined' sections, means; forimparting a reciprocating conveying motion: to the horizontal sectioncausing movement of material placed thereon toward the upwardly inclinedsection and connections between saidfhorizontal and inclined sectionssoconstructed and arranged that a conveying motion similar to that of thehorizontal section is imparted to` said inclined section and theinclined section is reciprocated through a greater longitudinal strokethan the horizontal section whereby to cause material moving thereoverto travel' at substantially the same speed as that upon the horizontal:section.

3. A reciprocating trough conveyor comprising relatively movablesubstantially horizontal v and upwardly inclined sections, means for:im'- parting a reciprocating conveying motion to the horizontal sectioncausingV movementfof material placed thereon'toward the'upwardl'yinclined section and link and* lever connections'between the horizontaland inclined sections so constructed and arranged that the inclinedsection has imparted thereto a conveying motion the strokes of which aresynchronous with and identical as to acceleration characteristics but ofgreater longitudinal extent than the strokes of the horizontal sectionwhereby to cause material moving thereover to travel at substantiallythe same speed as that upon the horizontal section.

4. A reciprocating trough conveyer comprising relatively movablesubstantially horizontal and upwardly inclined sections, means forimparting a` reciprocating conveying motion to the horizontal sectioncausing movement of material placed' thereon toward the upwardlyinclined section, a support, a rocker arm pivoted to the supportv atoneend and to the inclined section at its opposite end and alinkconnecting the rocker arm and horizontal section of the conveyor, saidlink being connected to the rocker arm intermediate the ends thereof.

5. A reciprocating trough conveyer comprising. relatively movablesubstantially horizontal and upwardly inclined. sections, means forimparting a reciprocating conveying motion to the horizontal sectioncausing movement of material placed thereon toward the upwardly inclinedsection, a support, a rocker arm pivoted to the support at one end andto the inclined section at its opposite end and. a link connecting therocker arm and. horizontal section of the conveyer, said link beingconnected to the rocker arm intermediate the ends thereof, said rockerarm at the completion of the conveying stroke of said conveying motionbeing substantially perpendicular to the inclined section of the trough.

6. A reciprocating trough conveyer comprising relatively movablesubstantially horizontal and upwardly inclined sections, and means forimparting a reciprocating conveyingY motion to'said sections causingmovement of material placed thereon toward the upwardly inclinedsection, so constructed and arranged that the motions ofthe sections aresimilar and have substantially identical time intervals while theinclined section is reciprocated through a greater longitudinal strokethan the horizontal section, the inclinedy section having an angularlybent nose-fitting withinand slidable upon the inner surface of thehorizontal section.

rI. A reciprocating trough conveyer comprising relatively movablesubstantially horizontal and upwardly inclined sections, means forimparting a. reciprocating conveying motion to the horizontal: sectioncausing movement of material placedl thereon toward the upwardlyinclinedsectionv and connections between saidhorizontal and inclined sections.so constructedv and arranged that aconveying motion similar to that ofthe horizontal sectionA is imparted tosaid inclined section and. theinclined. section is reciprocated through a greater longitudinal strokethan the horizontal section. whereby the conveyed material will passover said sections at substantially the same speed the inclined sectionhaving an angularly bent nose fitting within and slidable upon the innersurface of the horizontal section-- 8. A reciprocating trough-'conveyercomprising relatively movable substantially horizontal andupwardlyinclined sections, means for imparting ay reciprocatingconveying'motion to the horizontal section causing movement of material"placed thereon towardth'eupwardly inclined section and link and leverconnections between tl'iefhorizontal and inclined sections; soconstructed: andf arranged that theinclined section hasimparted theretoa conveying motion the strokes of which are synchronous with andidentical as to acceleration characteristics but of greaterlongitudinalv extent than the `strokes of the horizontal sectionrelatively movable substantially horizontal and inclined sections, meansfor imparting a reciprocating conveying motion to the horizontalsection, a support, a rocker arm pivoted to the support at one end andto the inclined section at ,its opposite end and a link connecting therocker arm and horizontal section ofthe conveyer, said link beingconnected to the rocker arm intermediate the ends thereof, the inclinedsection having an angularly bent nose fitting within and slidable uponthe inner surface of the horizontal section. 10

ROSCOE MOORE.

